Breuken verm. (reeks 1)

Hoofdmenu Eentje per keer  🖨

Vermenigvuldig de breuken

1. \(\frac{8}{8} . \frac{8}{4}\)
2. \(\frac{3}{9} . \frac{11}{7}\)
3. \(\frac{4}{3} . \frac{4}{10}\)
4. \(\frac{2}{7} . \frac{9}{3}\)
5. \(\frac{7}{5} . \frac{9}{12}\)
6. \(\frac{9}{12} . \frac{9}{9}\)
7. \(\frac{8}{12} . \frac{12}{10}\)
8. \(\frac{6}{11} . \frac{9}{7}\)
9. \(\frac{10}{10} . \frac{2}{7}\)
10. \(\frac{10}{9} . \frac{2}{10}\)
11. \(\frac{3}{2} . \frac{2}{10}\)
12. \(\frac{5}{2} . \frac{6}{11}\)

---

Vermenigvuldig de breuken

Verbetersleutel

1. \(\frac{8}{8} . \frac{8}{4}\\=\frac{1}{1} . \frac{2}{1}\\=\frac{1.2}{1.1}\\=\frac{2}{1}= 2\)
2. \(\frac{3}{9} . \frac{11}{7}\\=\frac{1}{3} . \frac{11}{7}\\=\frac{1.11}{3.7}\\=\frac{11}{21}\)
3. \(\frac{4}{3} . \frac{4}{10}\\=\frac{4}{3} . \frac{2}{5}\\=\frac{4.2}{3.5}\\=\frac{8}{15}\)
4. \(\frac{2}{7} . \frac{9}{3}\\=\frac{2}{7} . \frac{3}{1}\\=\frac{2.3}{7.1}\\=\frac{6}{7}\)
5. \(\frac{7}{5} . \frac{9}{12}\\=\frac{7}{5} . \frac{3}{4}\\=\frac{7.3}{5.4}\\=\frac{21}{20}\)
6. \(\frac{9}{12} . \frac{9}{9}\\=\frac{3}{4} . \frac{1}{1}\\=\frac{3.1}{4.1}\\=\frac{3}{4}\)
7. \(\frac{8}{12} . \frac{12}{10}\\=\frac{2}{3} . \frac{6}{5}\\=\frac{2.6}{3.5}\\=\frac{12}{15}\\=\frac{4}{5}\)
8. \(\frac{6}{11} . \frac{9}{7}\\=\frac{6.9}{11.7}\\=\frac{54}{77}\)
9. \(\frac{10}{10} . \frac{2}{7}\\=\frac{1}{1} . \frac{2}{7}\\=\frac{1.2}{1.7}\\=\frac{2}{7}\)
10. \(\frac{10}{9} . \frac{2}{10}\\=\frac{10}{9} . \frac{1}{5}\\=\frac{10.1}{9.5}\\=\frac{10}{45}\\=\frac{2}{9}\)
11. \(\frac{3}{2} . \frac{2}{10}\\=\frac{3}{2} . \frac{1}{5}\\=\frac{3.1}{2.5}\\=\frac{3}{10}\)
12. \(\frac{5}{2} . \frac{6}{11}\\=\frac{5.6}{2.11}\\=\frac{30}{22}\\=\frac{15}{11}\)